How to get Device Model and Model Name(Human readable)

AppleDevices.m

// see my comments

Use private API -[UIDevice _deviceInfoForKey:] carefully, you won't be rejected by Apple,

// works on both simulators and real devices, iOS 8 to iOS 12
NSString *deviceModelName(void) {
    // For Simulator
    NSString *modelName = NSProcessInfo.processInfo.environment[@"SIMULATOR_DEVICE_NAME"];
    if (modelName.length > 0) {
        return modelName;
    }

    // For real devices and simulators, except simulators running on iOS 8.x
    UIDevice *device = [UIDevice currentDevice];
    NSString *selName = [NSString stringWithFormat:@"_%@ForKey:", @"deviceInfo"];
    SEL selector = NSSelectorFromString(selName);
    if ([device respondsToSelector:selector]) {
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Warc-performSelector-leaks"
        modelName = [device performSelector:selector withObject:@"marketing-name"];
#pragma clang diagnostic pop
    }
    return modelName;
}

How did I get the key "marketing-name"?

Running on a simulator, NSProcessInfo.processInfo.environment contains a key named "SIMULATOR_CAPABILITIES", the value of which is a plist file. Then you open the plist file, you will get the model name's key "marketing-name".